CODEWITHSUNDEEP
swift
yleyver
yleyver

Reputation: 39

add Int number in string

I want to add random Int number in my variable I tried var playerCard = "card" + String(a) also var playerCard = "card\(a)" but I get the same error. btw im just a beginner learning basics.

every solution will be appericated <3

@State var a = Int.random(in: 1...10)
@State var playerCard = "card" + String(a)

Upvotes: 1

Views: 56

Answers (2)

Abizern
Abizern

Reputation: 150605

To add some explanation of why you need a computed property:

in Swift you don't have to use self when accessing properties except when the compiler requires it. Write out your declarations in full with self

@State var a = Int.random(in: 1...10)
@State var playerCard = "card" + String(self.a)

The problem is that self in self.a, doesn't exist yet. You cannot access self until all the objects properties have been initialised, and since playerCard is a property, it cannot be initialised, so the object cannot be initialised.

Upvotes: 0

aheze
aheze

Reputation: 30318

You can't have executable code, like "card" + String(a), directly in the property declaration... unless you use a computed property.

So, you can replace @State var playerCard = "card" + String(a) with something like this:

var playerCard: String { /// this is a computed property!
   "card" + String(a)
}

Upvotes: 1

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